The Pakistan Telecommunication Authority (PTA) has blocked Facebook over a competition encouraging its users to post caricatures of Prophet Mohammad (PBUH) on the social networking site.

Earlier in the day, the LHC ordered authorities to block Facebook until May 31..

The depiction of any prophet is strictly prohibited in Islam as blasphemous and Muslims across the world staged angry protests over the publication of satirical cartoons of the Prophet Mohammed in European newspapers in 2006